Home / 708,403.20-977,587.80-386,112.30

Finding the Fourth Proportional to 708,403.20, 977,587.80 and 386,112.30

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Solution

The fourth proportional to 708,403.20, 977,587.80 and 386,112.30 is: 532,830.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    708,403.20 : 977,587.80 = 386,112.30 : x
  2. Step 2: Convert to fraction form
    708,403.20/977,587.80 = 386,112.30/x
  3. Step 3: Cross multiply
    708,403.20x = 977,587.80 × 386,112.30
  4. Step 4: Simplify right side
    708,403.20x = 377,458,673,909.94
  5. Step 5: Solve for x
    x = 377,458,673,909.94/708,403.20
  6. Step 6: Final answer
    x = 532,830.28

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.